데이터가 변경될 때 AbstractTableModel GUI가 올바르게 업데이트되지 않는 이유는 무엇입니까?

import java.util.List;
import javax.swing.table.AbstractTableModel;

public class TableModel extends AbstractTableModel {

    private List<String[]> data;
    private String[] columnNames;

    public TableModel(List<String[]> data, String[] columnNames) {
        this.data = data;
        this.columnNames = columnNames;
    }

    @Override
    public int getRowCount() {
        return data.size();
    }

    @Override
    public int getColumnCount() {
        return columnNames.length;
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        return data.get(rowIndex)[columnIndex];
    }

    @Override
    public String getColumnName(int columnIndex) {
        return columnNames[columnIndex];
    }

    public void addRow(String[] rowData) {
        data.add(rowData);
        fireTableRowsInserted(data.size() - 1, data.size() - 1);
    }

    public void removeRow(int rowIndex) {
        data.remove(rowIndex);
        fireTableRowsDeleted(rowIndex, rowIndex);
    }

    public void updateData(List<String[]> newData) {
        data = newData;
        fireTableDataChanged();
    }
}